The calculated distance (air line) between Kuala Lumpur and Petaling Jaya is approximately 6 miles respectively 10 kilometers.
By car or train, the actual journey to Petaling Jaya is certainly longer, as only the direct route (as the crow flies) between Kuala Lumpur and Petaling Jaya has been calculated here.
Air line (approximately)
10 kilometers
5 nautical miles